Biology Final Exam
The three particles that make up atoms are d. protons, neutrons, and electrons.
Which of the following statements about a compound is true? A. The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed.
A covalent bond is formed as the result of b. sharing electrons.
In a water molecule, shared electrons spend more time around the oxygen atom than the hydrogen atoms. As a result, the oxygen atom is a. slightly negative.
A substance with a pH of 6 is called a. an acid.
In chemical reactions, atoms are c. rearranged.
The energy needed to get a reaction started is the b. activation energy.
A substance that speeds up the rate of a chemical reaction is called a. a catalyst.
What advance in technology made the discovery of cells possible? d. The microscope
Which of the following is NOT a principle of the cell theory? c. Very few cells are able to reproduce.
Not all cells are alike. Which of the following is NOT a true statement about differences between cells? d. Most cells have a membrane, but some do not.
Which of the following organisms are prokaryotes? c. Bacteria
Which of the following conclusions could you draw about the cell shown in Figure 7–1? a. The cell is eukaryotic because it has a nucleus.
Which of the following is a function of the nucleus? a. Stores DNA
Which structure makes proteins using coded instructions that come from the nucleus? d. ribosome
Which organelles are involved in energy conversion? a. mitochondria and chloroplasts
Which organelle would you expect to find in plant cells but not animal cells? c. chloroplast
You will NOT find a cell wall in which of these kinds of organisms b. animals
Which of the following structures serves as the cell’s boundary from its environment? b. cell membrane
The diffusion of water across a selectively permeable membrane is called b. osmosis
An animal cell that is surrounded by fresh water will burst because the
Which of the following statements about a compound is true? A. The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed.
A covalent bond is formed as the result of b. sharing electrons.
In a water molecule, shared electrons spend more time around the oxygen atom than the hydrogen atoms. As a result, the oxygen atom is a. slightly negative.
A substance with a pH of 6 is called a. an acid.
In chemical reactions, atoms are c. rearranged.
The energy needed to get a reaction started is the b. activation energy.
A substance that speeds up the rate of a chemical reaction is called a. a catalyst.
What advance in technology made the discovery of cells possible? d. The microscope
Which of the following is NOT a principle of the cell theory? c. Very few cells are able to reproduce.
Not all cells are alike. Which of the following is NOT a true statement about differences between cells? d. Most cells have a membrane, but some do not.
Which of the following organisms are prokaryotes? c. Bacteria
Which of the following conclusions could you draw about the cell shown in Figure 7–1? a. The cell is eukaryotic because it has a nucleus.
Which of the following is a function of the nucleus? a. Stores DNA
Which structure makes proteins using coded instructions that come from the nucleus? d. ribosome
Which organelles are involved in energy conversion? a. mitochondria and chloroplasts
Which organelle would you expect to find in plant cells but not animal cells? c. chloroplast
You will NOT find a cell wall in which of these kinds of organisms b. animals
Which of the following structures serves as the cell’s boundary from its environment? b. cell membrane
The diffusion of water across a selectively permeable membrane is called b. osmosis
An animal cell that is surrounded by fresh water will burst because the